Hiking the AT
Most likely you will not be able to ascend Katahdin in the month of May. Baxter SP normally opens for camping on May 15, but conditions on the mountain usually keep the trails up Katahdin closed for weeks after that.
You will need to plan on 7-10 days of food. We can help you plan a food drop in the 100 Mile Wilderness.
The time it takes to hike to Monson will depend on your hiking experience and the weather. The average hike is 7-10 days.
From June until the end of July the Black Fly is the defender of wilderness. Come prepared.